Home / 118,434.11-163,432.13-64,719.54

Finding the Fourth Proportional to 118,434.11, 163,432.13 and 64,719.54

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Solution

The fourth proportional to 118,434.11, 163,432.13 and 64,719.54 is: 89,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,434.11 : 163,432.13 = 64,719.54 : x
  2. Step 2: Convert to fraction form
    118,434.11/163,432.13 = 64,719.54/x
  3. Step 3: Cross multiply
    118,434.11x = 163,432.13 × 64,719.54
  4. Step 4: Simplify right side
    118,434.11x = 10,577,251,951.22
  5. Step 5: Solve for x
    x = 10,577,251,951.22/118,434.11
  6. Step 6: Final answer
    x = 89,309.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.